2. Licensing

X Window System source code is covered by many licenses. All of these
licenses have in common the fact that they do not impose significant
conditions on the modification or redistribution or either source code
or binaries beyond requiring one or more of the following:

Most of these licenses are based on the MIT, X Consortium, or BSD
(original and revised) licenses. All of them are consistent with the
Open Source Definition, and most are
consistent with the Free Software Foundation's Free Software Definition.

Copyright and Licensing information for X, including the reproduction
of copyright and/or license notices and attributions required by some
of the licenses for binary distributions, can be found in the License Document. If you find any omissions
in that document, please contact us with details at
xf_board@x.org
.
While the current licenses are all open source licenses, the
X.Org Foundation is attempting, with time, to bring as much as
possible of the code's licenses in the distribution into compliance with the
Debian Free Software Guidelines.